# DF-3132 -- verification pack

Finding: pm_curfat never validated against pm_FATs; FAT I/O displaced cross-region

Status: **reproduced** / impact **corruption** / confidence certain

## What was run
host: python3 craft_curfat.py out.img (FATs=1 extflags=0x8F; landing zone seeded with a FAT copy)

## How to reproduce
```
guest: vnconfig -c -S 64m /dev/vn0 img && mount_msdos /dev/vn0 /mnt && echo hi > /mnt/NEW.TXT && umount, then hexdump sectors 32 and 152
```

## Expected
real FAT unchanged; NEW.TXT chain (entry 7 EOC) written at sector 152 inside CANARY.BIN clusters

See VERDICT.md for the full narrative and verdict.json for the persisted
machine verdict. Artifacts: craft_curfat.py, run_guest.sh, run.log.